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Published: April 14, 2022, 7 p.m.

Even professional athletes aren\u2019t immune to cramping and dehydration. If you constantly suffer from these, your performance can be sorely affected. It\u2019s understandably frustrating, but it doesn\u2019t have to be \u2014 as long as you know your body well and how to optimise fuel and hydration to enhance your athletic performance.

In this episode, sports scientist Andy Blow discusses the proper way to fuel and hydrate your body for peak athletic performance. We disuss sweat tests and how they can help you balance your intake of fluid and electrolytes. Andy shares the importance of carb fueling, along with the benefits of intermittent fasting and the keto diet. Lastly, Andy explains what his company, Precision Fuel & Hydration, does and its commitment to helping athletes achieve peak health and performance.

If you want to learn more about proper fueling and hydration, then this episode is for you!

Here are three reasons why you should listen to the full episode:

1. Understand your body\u2019s needs for peak athletic performance.
2. Learn the amount of carbs, fluid, and electrolytes your body needs.
3. Find out how to curb gut issues while hydrating.

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Episode Highlights [03:51] Andy\u2019s Background

• Andy was a full-time athlete and studied sports science at university.
• Bringing together his degree and athletic background, he built his company, Precision Fuel & Hydration.
• Andy participated in triathlons and aimed for the 2004 Athens Olympics. His performance sweet-spot was races over an hour and less than five or six hours.

[09:11] The Story Behind Precision Fuel & Hydration

• During races, Andy performed well in cool conditions.
• He noticed that he didn\u2019t do well in hot weather. He had a high sweat rate, which led to cramps and low sodium levels.
• After getting a sweat test, he discovered that he was losing too much salt through sweat.\xa0
• So, he dialled up the sodium and reduced his fluid intake. The electrolyte dosage is crucial for optimum performance.
• Andy started Precision Fuel & Hydration by sweat testing people to determine how much fluid and electrolytes they need.

[18:17] Gut Issues & Electrolytes

• Gut issues can occur when there\u2019s a mismatch between your physiology and the amount of electrolytes you\u2019re consuming.
• Listen to your body and make sure your intake of fluid and electrolytes are right for you.

[21:23] How To Get A Sweat Test

• Precision Fuel & Hydration has sweat test centres in the UK, America, Australia, New Zealand, and Canada.
• If you\u2019re interested in getting a sweat test, you can find their locations on their website or reach out to find someone local to you.
• Their website also has a free online hydration test.
• There's no "one size fits all" approach to hydration; an individualised approach to health is needed.

[27:37] The Relationship Between Sodium & Potassium

• The relationship between the ratios of body fluid and electrolytes is essential.
• Sodium is the predominant electrolyte in your extracellular fluid, while potassium is the predominant electrolyte in your intracellular fluid.
• An imbalance between sodium and potassium can be detrimental.
• Potassium doses can be dangerous if not done properly.

[27:37] The Role of Magnesium

• You don\u2019t lose vast amounts of magnesium when you sweat.
• However, some people find that taking magnesium supplements helps with cramps.
• The majority of cramping incidents can be solved with the right sodium supplementation, making it a game-changer in an athlete\u2019s performance.

[37:11] Carb Fueling

• If you load up on carbs before endurance events, you can go faster for longer.
• The more carbohydrates you can oxidise, the lower the oxygen your body consumes in exercise, and the faster you can go \u2014 that\u2019s why marathon runners consume lots of carbs.
• Maximise carbohydrate intake and absorption for endurance events.
• \xa0For fast moving-athletes, the minimum carbohydrate recommendation is around 60\xa0 to 90 grams per hour.
• Endurance training helps the body burn fat more efficiently, but when you\u2019re burning fat, your pace slows\u2013which isn\u2019t optimal for racing.

[47:54] What\u2019s In Their Gels?

• Precision Fuel & Hydration gels are maltodextrin-based with some fructose.
• Other gels are more like syrups, which can make people sick, but Precision Fuel & Hydration gels are like jelly or jam without flavour, colour, and electrolytes.
• Its ingredients are carbs, pectin, and citric acid.
• Fat adaptation and carbs depend on your body and activity.
• While carbs might seem unfashionable with the rise of the keto diet and fat adaptation, carb intake can also help with fueling.

[57:22] Intermittent Fasting

• Andy cycles his carbohydrate intake around his activity level.
• His wife is interested in intermittent fasting from a scientifically-based perspective.
• He does not follow the same regime as his wife, but he skips breakfast and narrows his eating window depending on his activity.
• Doing intermittent fasting effectively fires up the same cellular machine.
• Don\u2019t be rigid about fasting and eat when you need to so you won\u2019t be deficient.

[1:07:14] Find Out How Much Carbs You Need

• Their Quick Carb Calculator shows how many carbs you need per hour.
• You can also access one-on-one video calls with their sports science team so you can get an individualised approach.

[1:09:26] Staying True To Their Mission

• Precision Fuel & Hydration began offering one-on-one video calls during the pandemic.
• They use automation to make these calls quick and simple.
• The core of their business is to be a resource for athletes \u2014 and they always keep this mission in mind as they scale.

7 Powerful Quotes

\u2018I thought I'd solve the problem for everyone because I was taking a high dose and I was just like high dose is the way to go. But you learn over time that actually that more individualized approach is the way to go.\u2019

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\u2018The thing about body fluid and electrolytes is that the absolute levels of them are important. But what's even more important is the relationship between the ratios between them.\u2019

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\u2018Sodium is the predominant electrolyte in your extracellular fluid. Potassium is the predominant electrolyte in your intracellular fluid. When you get those two seriously out of whack that can cause problems \u2014 no matter if you've got the right level of water.\u2019

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\u2018What happens with 90 odd percent of athletes that have electrolyte disturbances, it's a sodium imbalance issue because extracellular fluid is very sodium rich. It doesn't have a lot of potassium in it.\u2019

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\u2018At least the majority, if not a vast majority of that cramping, can be alleviated with the right sodium supplementation.\u2019

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\u2018If you want to go fast doing endurance events even for multiple hours, carbohydrate is your friend and you kind of need to work on ways to maximise intake and absorption.\u2019

\xa0

\u2018One-size-fits-all soundbite advice like, \u2018With electrolytes, you need to do this. With fluid, you need to do this.\u2019 The reality is there's a little bit more or a lot more nuance in a lot of people's heads.\u2019

Resources

• Gain exclusive access and bonuses to Pushing the Limits Podcast by becoming a patron!
• Precision Fuel & Hydration website
• Connect with Andy: Twitter | LinkedIn

About Andy

Andy Blow is a sports scientist and co-founder of Precision Fuel & Hydration. He earned his degree in Sports and Exercise Science from the University of Bath. His expertise is sweat, dehydration, and cramping. He was formerly the team sports adviser for the Benetton and Renault and remains the Porsche Human Performance Centre adviser.

An elite athlete in his youth, Andy finished in the top 10 of Ironman and IM 70.3 races, including winning an Xterra World title. His struggles with cramps and dehydration led to his specialisation in electrolyte replenishment and building Precision Fuel & Hydration. He\u2019s a leading figure in sports hydration and has co-authored several studies and books. His works have been published in BMJ Journals, Journal of the International Society of Sports Nutrition, and Journal of the Endocrine Society.

Learn more about Andy\u2019s work on the Precision Fuel & Hydration website. You can also connect with him on Twitter and LinkedIn.

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Post a review and share it! If you enjoyed tuning in, then leave us a review. You can also share this with your family and friends so they can know how to properly fuel and hydrate their bodies.\xa0

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To pushing the limits,

Lisa

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